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just olya [345]
2 years ago
6

5.

Mathematics
1 answer:
Paraphin [41]2 years ago
3 0

Step-by-step explanation:

the mean value is the sum of all values divided by how many values there are.

so,

(3 + -5 + 70 + -90 + -13) / 5 = -35/5 = -7

-7° F is the mean temperature of the 5 cities.

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